A college basketball star, Koch held MIT's record for most points scored in a game for 46 years.

Koch survived a runway plane collision in 1991; he felt his way down the aisle and pried open a door to escape.

Net worth over time

$40B

Billionaires March 2014

$42B

Forbes 400 September 2014

$42.9B

Billionaires March 2015

$41B

Forbes 400 September 2015

$39.6B

Billionaires March 2016

$42B

Forbes 400 October 2016

$48.3B

Billionaires March 2017

$48.5B

Forbes 400 October 2017

$60B

Billionaires March 2018

$53.5B

Forbes 400 October 2018

The way I look at it is, cancer research is absolutely nonpartisan. Cancer is very democratic in the sense that it attacks people regardless of their race, their gender, their national background, or their political persuasions.